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"Each year, members of our community are needlessly maimed and killed on our roads and highways," said Capt. Lisa Wrobel, the California Highway Patrol's El Cajon area commander.

"Our goal is to ensure safe passage of each and every motorist by targeting roads where there is a high frequency of drunk driving," she said. "A sobriety checkpoint is an effective tool in the battle against drunk driving and is designed to augment existing patrol operations."

In Chula Vista, where three people have died as a result of alcohol-involved crashed in the past three years, police are planning a checkpoint from 6 p.m. Friday to 2 a.m. Saturday and additional checkpoints Saturday and Sunday nights.

CHP officers have scheduled a checkpoint in Rancho San Diego from 7 p.m. Saturday to 1:30 a.m. Sunday, while Oceanside police will conduct a DUI checkpoint between 8 p.m. Friday and 3 a.m. Saturday.

Sheriff's deputies in Imperial Beach scheduled a checkpoint from 8 p.m. Saturday to 2:30 a.m. Sunday, along with saturation patrols.

San Diego police set checkpoints at undisclosed locations in the city for 9 p.m. Friday and Saturday and another to begin at 4 p.m. Monday, San Diego police Officer Mark McCullough said.

San Diego County's "Avoid the 14" task force, named for the number of area law enforcement agencies involved, will also conduct checkpoints and roving patrols through Monday, McCullough said.

Sheriff's deputies, CHP officers and other law enforcement agencies will conduct extra patrols and checkpoints in Encinitas, Santee and Poway Friday night, in Imperial Beach Saturday and in Santee Sunday, according to sheriff's Lt. David Gilmore.

Between Aug. 17 and Sunday, 417 suspected drunken drivers were arrested in San Diego County, according to the sheriff's department.